In the first episode "The Challenge", the Justice League of America (Batman, Robin, Flash, Green Lantern, Hawkman, Captain Marvel, Huntress and Black Canary) unite at the Hall of Heroes to celebrate elderly retired superhero Scarlet Cyclone's birthday. The party is interrupted by the Legion of Doom (Riddler, Weather Wizard, Sinestro, Mordru, Doctor Sivana, Giganta and Solomon Grundy), who announce they have hidden a deadly bomb in a secret location, and the heroes must follow clues to find it. It's all actually a ruse to trick the heroes into drinking Dr. Sivana's de-powering potion. Despite the fact that they now lack their super-powers, the heroes fight the villains, and manage to both disarm the bomb and recover their powers. Only after the whole battle is over, and the heroes have proven victorious, does Scarlet Cyclone arrive to give his aid.

The second episode "The Roast" was a celebrity roast of the superheroes hosted by Ed McMahon. All of the major characters from the first episode return. New characters featured include Ghetto Man, an African-American superhero who performs a stand-up comedy routine; Aunt Minerva, the Captain Marvel villainess who seeks a sixth husband from among the male superheroes; Rhoda Rooter, an entertainment reporter who snags an exclusive interview with Giganta and the Atom (Alfie Wise) on their engagement to be married; and Esther Hol, Hawkman's mother.